mirror of
https://github.com/git/git.git
synced 2024-11-18 04:53:58 +01:00
060610c572
Migrations are done automatically on an as-needed basis when new
revisions are to be fetched. Stale remote branches do not get
migrated, yet.
However, unless you set noMetadata or useSvkProps it's safe to
just do:
find $GIT_DIR/svn -name '.rev_db*' -print0 | xargs rm -f
to purge all the old .rev_db files.
The new format is a one-way migration and is NOT compatible with
old versions of git-svn.
This is the replacement for the rev_db format, which was too big
and inefficient for large repositories with a lot of sparse history
(mainly tags).
The format is this:
- 24 bytes for every record,
* 4 bytes for the integer representing an SVN revision number
* 20 bytes representing the sha1 of a git commit
- No empty padding records like the old format
- new records are written append-only since SVN revision numbers
increase monotonically
- lookups on SVN revision number are done via a binary search
- Piping the file to xxd(1) -c24 is a good way of dumping it for
viewing or editing, should the need ever arise.
As with .rev_db, these files are disposable unless noMetadata or
useSvmProps is set.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
111 lines
2.4 KiB
Bash
111 lines
2.4 KiB
Bash
. ./test-lib.sh
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if test -n "$NO_SVN_TESTS"
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then
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test_expect_success 'skipping git-svn tests, NO_SVN_TESTS defined' :
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test_done
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exit
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fi
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GIT_DIR=$PWD/.git
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GIT_SVN_DIR=$GIT_DIR/svn/git-svn
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SVN_TREE=$GIT_SVN_DIR/svn-tree
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svn >/dev/null 2>&1
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if test $? -ne 1
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then
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test_expect_success 'skipping git-svn tests, svn not found' :
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test_done
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exit
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fi
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svnrepo=$PWD/svnrepo
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perl -w -e "
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use SVN::Core;
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use SVN::Repos;
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\$SVN::Core::VERSION gt '1.1.0' or exit(42);
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system(qw/svnadmin create --fs-type fsfs/, '$svnrepo') == 0 or exit(41);
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" >&3 2>&4
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x=$?
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if test $x -ne 0
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then
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if test $x -eq 42; then
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err='Perl SVN libraries must be >= 1.1.0'
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elif test $x -eq 41; then
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err='svnadmin failed to create fsfs repository'
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else
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err='Perl SVN libraries not found or unusable, skipping test'
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fi
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test_expect_success "$err" :
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test_done
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exit
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fi
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rawsvnrepo="$svnrepo"
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svnrepo="file://$svnrepo"
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poke() {
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test-chmtime +1 "$1"
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}
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SVN_HTTPD_MODULE_PATH=${SVN_HTTPD_MODULE_PATH-'/usr/lib/apache2/modules'}
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SVN_HTTPD_PATH=${SVN_HTTPD_PATH-'/usr/sbin/apache2'}
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start_httpd () {
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if test -z "$SVN_HTTPD_PORT"
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then
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echo >&2 'SVN_HTTPD_PORT is not defined!'
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return
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fi
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mkdir "$GIT_DIR"/logs
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cat > "$GIT_DIR/httpd.conf" <<EOF
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ServerName "git-svn test"
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ServerRoot "$GIT_DIR"
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DocumentRoot "$GIT_DIR"
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PidFile "$GIT_DIR/httpd.pid"
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Listen 127.0.0.1:$SVN_HTTPD_PORT
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LoadModule dav_module $SVN_HTTPD_MODULE_PATH/mod_dav.so
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LoadModule dav_svn_module $SVN_HTTPD_MODULE_PATH/mod_dav_svn.so
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<Location /svn>
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DAV svn
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SVNPath $rawsvnrepo
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</Location>
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EOF
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"$SVN_HTTPD_PATH" -f "$GIT_DIR"/httpd.conf -k start
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svnrepo=http://127.0.0.1:$SVN_HTTPD_PORT/svn
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}
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stop_httpd () {
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test -z "$SVN_HTTPD_PORT" && return
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"$SVN_HTTPD_PATH" -f "$GIT_DIR"/httpd.conf -k stop
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}
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convert_to_rev_db () {
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perl -w -- - "$@" <<\EOF
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use strict;
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@ARGV == 2 or die "Usage: convert_to_rev_db <input> <output>";
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open my $wr, '+>', $ARGV[1] or die "$!: couldn't open: $ARGV[1]";
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open my $rd, '<', $ARGV[0] or die "$!: couldn't open: $ARGV[0]";
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my $size = (stat($rd))[7];
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($size % 24) == 0 or die "Inconsistent size: $size";
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while (sysread($rd, my $buf, 24) == 24) {
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my ($r, $c) = unpack('NH40', $buf);
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my $offset = $r * 41;
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seek $wr, 0, 2 or die $!;
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my $pos = tell $wr;
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if ($pos < $offset) {
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for (1 .. (($offset - $pos) / 41)) {
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print $wr (('0' x 40),"\n") or die $!;
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}
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}
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seek $wr, $offset, 0 or die $!;
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print $wr $c,"\n" or die $!;
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}
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close $wr or die $!;
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close $rd or die $!;
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EOF
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}
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